CN105993204B - The correlation method of illuminator and protection light source including protection circuit from static discharge - Google Patents
The correlation method of illuminator and protection light source including protection circuit from static discharge Download PDFInfo
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- CN105993204B CN105993204B CN201480075377.1A CN201480075377A CN105993204B CN 105993204 B CN105993204 B CN 105993204B CN 201480075377 A CN201480075377 A CN 201480075377A CN 105993204 B CN105993204 B CN 105993204B
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- 230000003068 static effect Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 230000001052 transient effect Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 238000005286 illumination Methods 0.000 claims 2
- 230000001629 suppression Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VZMLEMYJUIIHNF-QURGRASLSA-N [4-[(e)-4-(4-propanoyloxyphenyl)hex-3-en-3-yl]phenyl] propanoate Chemical compound C1=CC(OC(=O)CC)=CC=C1C(\CC)=C(/CC)C1=CC=C(OC(=O)CC)C=C1 VZMLEMYJUIIHNF-QURGRASLSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/0203—Particular design considerations for integrated circuits
- H01L27/0248—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/60—Protection against electrostatic charges or discharges, e.g. Faraday shields
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of illuminator, it is included in a string of the light sources (L) being connected in series between the first terminal (106) and Second terminal (GND), wherein at least one electric contact of a string of light sources (L) can be used.System also includes protection circuit (30), static discharge of the protection circuit protection light source (L) from being applied to workable electric contact (302).Specifically, protection circuit (30) includes：It is connected at least one TVS diode or anti-paralleled diode (D of Second terminal (GND)1、D2) group；Each electric contact (302) and TVS diode or anti-paralleled diode (D are connected to for each electric contact (302)1、D2) each capacitor (C between groupESD1、CESD2、CESD3And CESD4) so that the electrostatic event for being applied to electric contact (302) passes through each capacitor (CESD1、CESD2、CESD3And CESD4) and each TVS diode or anti-paralleled diode (D1、D2) group towards Second terminal (GND) discharge.
Description
Technical field
This disclosure relates to illuminator.
Be particularly noted that protect the illuminator from static discharge (ESD) in the case of develop the disclosure.
Background technology
The electronic commutator of light source include (for example, at least one light emitting diode (LED) or other solid-state lighting devices,
Such as, for example, laser diode) can output provide DC current.
Fig. 1 shows the possibility illuminator for including electronic commutator 10 and at least one lighting module 20.For example, Fig. 1 institutes
Show it is two lighting modules 20a and 20b being connected in parallel.
Generally, each lighting module 20 can be combined with the electronic commutator 10 in integrated illuminator or can
Electronic commutator 10 is connected to by cable.
Electronic commutator 10 generally includes control circuit 102 and power circuit 12 (for example, AC/DC or DC/DC switch electricity
Source), the circuit receives power supply signal at input (for example, from power line) and provided via power supply output 106 at output straight
Flow electric current.The electric current can be stable or even change over time, for example, to adjust by the strong of the light of lighting module transmitting
Spend (i.e. so-called " light modulation " function).For example, control circuit 102 can be via the reference channel I of power circuit 12refSet by one
Electric current needed for individual LED module or multiple modules 20.
Generally, the regulation of the intensity for the light launched by lighting module 20 can be by adjusting across lighting module 20
Average current realizes, such as by setting relatively low reference current Iref, or by enabling and disabling power output 106, such as it is logical
Extra pulse width modulated (PWM) signal.
Generally, LED module 20 may include single led or multiple LED.For example, Fig. 2 shows wherein lighting module 20
Include the example of LED chains (or LED strip) (plurality of LED strip connection connection).
In addition, LED also can be in the different bifurcations separation being connected in parallel.For example, each module 20 may include to be connected in parallel
Multiple LED strips.
LED strip can be different from each other because of different factors, for example, number amount and type, operation temperature or other on LED
Parameter, such as so that the voltage at a string of both ends is different from a string or the voltage at more string both ends.For this reason, it is multiple strings are straight
The solution connect shown in the Fig. 1 being connected in parallel is not often practical so far because power supply be with not by
The mode of control is distributed on each string.
Fig. 3 and Fig. 4 shows to can be used for the various solutions for ensuring the evenly property that power supply is distributed on multiple lighting modules 20
Scheme.
For example, Fig. 3 shows the example that wherein each lighting module 20 is supplied via additional electron converter 30.Specifically,
Especially, in the example considered, three lighting modules 20a, 20b and 20c are shown, these modules are via three extra currents
Generator 30a, 30b and 30c (such as, such as buck converter) are supplied.For example, these current generators 30a, 30b and 30c can
Line 106 is parallel-connected to, and electronic commutator 10 can establish constant voltage on online 106.
On the contrary, Fig. 4 shows an example, wherein each lighting module 20a, 20b and 20c are connected in series to respective electric current
Adjuster 40a, 40b and 40c, such as, such as linear current regulators, and lighting module 20a, 20b and 20c are via common electric voltage
Supply.The voltage also can be for example by detecting the sensor of the voltage difference on linear regulator in the minimum value that may determine
Adjustment.
Instead of current regulator 40a, 40b and 40c, it is possible to use current mirror or the transformer with multiple secondary windings.
In this case, dimming function can be carried out via above-mentioned current regulator 40a, 40b and 40c, such as：
A) by selectively enabling or disabling respective current regulator 40a, 40b via drive signal (such as pwm signal)
And 40c；Or
B) in the case of using adjustable current adjuster, by the reference for setting current regulator 40a, 40b and 40c
Voltage.
Generally, current generator 30a, 30b and 30c or current regulator 40a, 40b and 40c also can each shine
Bright module is merged into 20a, 20b and 20c.
In addition, the light source L of each branch can also be separated on the multiple lighting modules being connected in series, i.e. be connected in series
Multiple lighting modules can be used to replace each lighting module 20a, 20b and 20c shown in Fig. 1 to 4.
Under normal circumstances, lighting module 20 can even be changed by layman, and therefore lighting module 20 and converter
10 must be protected from static discharge.
For example, Fig. 5 shows the example of typical protection circuit, wherein each lighting module 20 includes and respective a string of LED
The Zener diode D of L inverse parallels connectionESD.Generally, Zener two can be provided respectively for the LED subgroups of each LED or string
Pole pipe DESD.In fact, generally, the protection diode with workable electric contact is provided for each unit or LED subgroups.
It should be understood by those skilled in the art that instead of Zener diode, it is possible to use transient voltage suppresses (TVS) two pole
Pipe.
Generally, this protection diode can be set directly in light source L package, or is arranged on lighting module 20
Printed circuit on.
For example, Fig. 6 shows the example of the known protection circuit for LED strip.
In the example considered, LED strip includes multiple LED, such as four LED L1、L2、L3And L4, may be connected to electricity
Sub- converter 10.
In the example considered, each protection diode is connected in anti-parallel to each LED L, and therefore protection circuit 30
Including four diode DESD1、DESD2、DESD3And DESD4, such as Zener diode.
In addition, other diode D can be setARB, such as, such as Schottky diode (Schottky diode), it is connected
LED strip is connected to, such as between the plus end 106 and LED strip of converter 10, for protection LED strip from reverse biased.
Obviously, above-mentioned protection diode adds other costs, and does not for example carry out machinery via resin or silicon in LED strip
In the case of protection, it should be each LED and protection diode be provided.
The content of the invention
The purpose of the present invention is to overcome the shortcomings that above-mentioned.
According to the present invention, above-mentioned purpose has benefited from following illuminator and realized, illuminator includes：The first terminal and
Two-terminal；A string of light sources, are connected in series between the first terminal and Second terminal；And protection circuit, it is designed as being used to protect
From the static discharge of at least one electric contact from being applied to a string of light sources, protection circuit includes a string of light sources：It is connected to
At least one transient voltage suppressor diode or anti-paralleled diode group of Second terminal；And each capacitor, it is connected at least
Between one in one electric contact and at least one transient voltage suppressor diode or anti-paralleled diode group so that be applied to
The electrostatic event electric discharge of electric contact passes through each capacitor and each transient voltage suppressor diode, or by each capacitor and instead
Parallel diode group is discharged towards Second terminal.
The present invention also indicated that for protecting light source from the corresponding method of static discharge, wherein, a string of light sources are connected in series
Between the first terminal and Second terminal, method comprises the following steps：By at least one transient voltage suppressor diode or it is anti-simultaneously
Di- pole pipe group is connected to Second terminal；And in each at least one electric contact and at least one transient voltage suppressor diode
Or connect capacitor between one in anti-paralleled diode group so that the static discharge for being applied to electric contact passes through each capacitor
And each transient voltage suppressor diode or anti-paralleled diode group are discharged towards Second terminal.
Generally, solution described herein can be applied to a string of light sources, such as, such as LED or other solid-states
Lighting device, it is connected in series in the first terminal (being typically plus end) between Second terminal (it generally represents ground).
In various embodiments, at least one electric contact in string is not mechanically protected and therefore can be used.
Therefore, in various embodiments, there is provided protection circuit is for protecting light source from can be applied to above-mentioned electric contact
Static discharge.
In various embodiments, protection circuit include for this purpose be connected to Second terminal (that is, be connected to ground)
One or more TVS diodes or anti-paralleled diode group.Generally, may also provide for the simply single of all electric contacts
Individual TVS diode or anti-paralleled diode group.
In various embodiments, associated with workable each electric contact is each capacitor, and it is connected to each electricity and touched
Between one in point and TVS diode or anti-paralleled diode group.
Therefore, in various embodiments, the possibility electrostatic event for being applied to electric contact passes through each capacitor and the poles of each TVS bis-
Pipe or anti-paralleled diode group are discharged towards Second terminal (that is, ground).
For example, in various embodiments, the electric contact between light source is unprotected and therefore associated with each light source
It is each capacitor.Similarly, the string may also comprise additional part, such as, such as be connected in series to the current regulator of light source.
In this case, it is also contemplated that another capacitor associates with each additional component.
Brief description of the drawings
The present invention is purely described by way of non-limiting example referring now to accompanying drawing, wherein：
- Fig. 1 to Fig. 6 has described previously；
- Fig. 7 and Fig. 8 shows the protection circuit according to this specification；And
- Fig. 9 shows the current regulator that can be used in the embodiment in fig. 8.
Embodiment
In the following description, show that various details aim to provide the deep understanding to embodiment.Can not have
One or more details, or by other methods, part, material etc. in the case of obtain these embodiments.In other feelings
Under condition, known structure, material or operation are not shown or described in detail so that the various aspects of embodiment understand.
Reference to " embodiment " or " one embodiment " in the framework of this specification is intended to refer to retouch on embodiment
Particular configuration, structure or the feature stated are included at least one embodiment.Therefore, it such as may be present in each of this specification
The phrase of " in embodiment " or " in one embodiment " in point is not necessarily referring to one and same embodiment.In addition,
Specific conformation, structure or feature can combine in any suitable manner in one or more embodiments.
Bibliography used herein provides only for convenient and does not therefore limit the scope or embodiment of protection
Scope.
As previously mentioned, the present disclosure provides solution, the solution to make solid-state lighting device (such as example
Such as LED) it is protected in order to avoid static discharge, so as to substantially eliminate the needs to protection diode, or at least reduces its number
Amount.
Fig. 7 shows the possibility embodiment of the protection circuit 30 according to this specification.
General structure is substantially based on the figure shown in Fig. 6.Therefore, and in the embodiment considered, illuminator
Including at least one LED strip, the LED strip include may be connected to electronic commutator 10 multiple LED (these can be distributed in series connection connect
On the one or more lighting modules connect).Therefore, generally, described solution can also be used for reference to figure 1, Fig. 3
In the illuminator described by Fig. 4.
In the embodiment considered, at least two electric contacts in string are not mechanically protected.Therefore, these contacts can make
With and each circuit (particularly LED) static discharge should be protected from.
For example, in the embodiment considered, four LED L are shown1、L2、L3And L4, they are arranged on printed circuit,
Such as, such as flexible print circuit, without any mechanical protection.Thus, each LED should be protected from static discharge.
Therefore, still in this case, there is provided protection circuit 30.Substantially, according to the protection circuit of this specification
30 include being connected in series to TVS diode or the Y shape of two anti-paralleled diodes (such as, such as two Schottky diodes) is matched somebody with somebody
The multiple capacitors put.
Specifically, in the embodiment considered, protection circuit 30 includes multiple capacitors, and its quantity, which is equal to, to be protected
Unit quantity.As previously mentioned, above-mentioned least unit can be the individual LED in LED strip, or LED subgroups or whole
Lighting module.For example, in the case where being provided in a manner of four LED of no any mechanical protection example, also provide
Four capacitor CESD1、CESD2、CESD3And CESD4。
In embodiments, if each unit includes the multiple LED, each capacitor C being connected in seriesESD1、CESD2、
CESD3And CESD4The first terminal be preferably coupled directly to each LED anode, i.e. the anode of connection to last LED.On the contrary, electric capacity
Device CESD1、CESD2、CESD3And CESD4Second terminal be electrically connected, be preferably directly connected to, without other intermediate modules.
In various embodiments, the common point of the above passes through TVS diode or two anti-paralleled diode D1And D2(such as,
Such as two low-voltage diodes) it is connected to ground.Generally, multiple TVS diodes or multigroup inverse parallel two be may also provide
Pole pipe, and one that the Second terminal of each capacitor may be connected in TVS diode or anti-paralleled diode group.Example
Such as, each lighting module may include only one TVS diode or anti-paralleled diode to D1And D2, and it is associated with lighting module
LED capacitor can be all connected to above-mentioned TVS diode or anti-paralleled diode pair.
Therefore, in set point (such as Fig. 7 LED L2And L3Between point 302) place electrostatic event in the case of, electric current
Will be mainly in capacitor CESD3In discharge first and then pass through TVS diode or two anti-paralleled diode D1And D2.Specifically
Ground, in the case where electrostatic event corresponds to positive voltage, electric current will pass through diode D1Electric discharge, otherwise passes through diode D2Electric discharge.
For this reason, TVS diode or diode D1And D2There should be short enabling time (typically smaller than 700ps).
Generally, protective condenser CESD1、CESD2、CESD3And CESD4The size of electric capacity should be appropriate.It is in fact, electric
Appearance should not be too low, because in this case, electric current can also be discharged by adjacent LED.On the contrary, high capacitance needs many spaces simultaneously
Cost can be increased.For example, in one embodiment, protective condenser CESD1、CESD2、CESD3And CESD4With between 10 and 250nF
Electric capacity.
The solution proposed is highly stable prevented also from failure (as needed for CE statements), because there is in power supply
At least two parts being connected in series between voltage 106 and ground G ND.
In addition, protection circuit 30 is highly stable prevented also from reverse bias, because, in the case of direct current, capacitor
CESDThe picture open circuit that can be showed.
Finally, the protection circuit 30 proposed is real also by the low frequency PWM described in the preface part such as this specification
Existing Dimming operation.
Fig. 8 shows may be connected to the lighting module 20 for the electronic commutator 10 that regulation voltage VDD is produced on circuit 106
Possible embodiment, as depicted in, for example, fig. 4.
In the embodiment considered, lighting module 20 includes LED strip, including such as four LED L1、L2、L3And L4, and
LED current regulator 40 is connected in series to, it limits the electric current through LED strip.For example, in the embodiment considered, electricity
Throttle regulator 40 passes through LED L1Negative electrode and LED L2Anode between two terminals 402 and 404 connect.
In addition, in the embodiment considered, current regulator 40 is associated with recognition component, such as, such as electricity
Hinder device RSet, it identifies the maximum current that may pass through LED strip.
Therefore, by the way that previously described solution is applied into above-mentioned lighting module 20, protection circuit 30 will include using
In an every group of LED capacitor CESD(there is unprotected contact).Therefore, it is necessary to four in the embodiment considered
Capacitor CESD1、CESD2、CESD3And CESD4, wherein the first terminal of each capacitor is connected to each LED L anode.On the contrary, the
Two-terminal passes through TVS diode or two anti-paralleled diode D1And D2It is connected to ground GND.
However, in this case, the first LED L1Negative electrode will not also be protected and from static discharge.Therefore,
In the case where the terminal can also be used, it is sufficient to which negative electrode is connected to TVS diode or diode D by addition1And D2Another electric capacity
Device CESD5。
Therefore, in general, each terminal (terminal except representing ground GND) passes through protection workable for LED strip
Capacitor is connected to TVS diode or two anti-paralleled diode D1And D2, they so be connected to ground GND or plus end 106.
Finally, Fig. 9 shows the possibility embodiment of current regulator.
In the embodiment considered, current regulator 40 is configured for detection through the electric current I of current regulator 40o
And according to electric current IoChange its resistance so that foregoing electric current is not over maximum current threshold value Imax。
In the embodiment considered, current regulator 40 passes through the receiving voltage V of terminal 402in.In the embodiment considered
In, plus end 402 passes through resistor RsenseIt is connected to the first PNP bipolar transistor Q1 emitter stage and the first transistor Q1 collection
Electrode is directly connected to positive output terminal 404.
In the embodiment considered, plus end 402 is also directly connected to the second PNP bipolar transistor Q2 emitter stage,
And the second PNP bipolar transistor Q2 colelctor electrode is connected to ground GND by resistor R1.
Finally, the first transistor Q1 base stage is directly connected to second transistor Q2 colelctor electrode, and second transistor Q2
Base stage the first transistor Q1 emitter stage either directly or preferably is connected to by resistor R2.
Substantially, resistor R1 to enable transistor Q1, and the transistor obtains electric current IoFlowing with towards positive output
Terminal 404 transmits.
When through resistor RsenseElectric current when exceeding given threshold value, i.e. as resistor RsenseThe voltage at both ends exceedes crystalline substance
During body pipe Q2 threshold voltage, transistor Q2 is begun to turn on by part deactivated transistor Q1, and which has limited pass through transistor
The flowing of Q1 electric current.
It will be understood by those skilled in the art that circuit 40 may also include other parts, it is such as stable to be supplied by output 404
The resistor R3 and capacitor C1 of the power supply signal of electricity.
In addition, it will be understood by those skilled in the art that similar circuit for limiting electric current, even with the bipolar crystalline substances of NPN
The circuit of body pipe or mosfet transistor be it is well known that this hence in so that it is any it is described in further detail be unnecessary.
To sum up, in the embodiment of consideration, resistance RsenseValue determine voltage drop so that once transistor Q2 threshold value electricity
Pressure is exceeded, then enables transistor Q2.Therefore, maximum current threshold value can be by resistor RsenseResistance device set, this can
Accordingly act as clearly may pass through the recognition component R of the maximum current of LED stripSet。
Therefore, solution described herein can be used for protection LED strip L from static discharge.Specifically, in various implementations
In example, LED strip is connected between plus end and the negative terminal for representing ground GND.Generally, solution is equally applicable to it
Its solid-state lighting device, such as, such as laser diode.
At least one TVS diode or anti-paralleled diode pair, and each electricity are included according to the protection circuit of this specification
Container, for the terminal being protected between each contact of static discharge, such as plus end and workable LED L.
Specifically, protected each terminal by each capacitor and TVS diode or anti-paralleled diode to being connected to
Ground GND so that possible electrostatic event can pass through each capacitor CESDWith TVS diode or anti-paralleled diode to direction ground GND
Release.
Certainly, do not influence the present invention principle in the case of, relative to purely by non-limiting examples this
Shown by text, without departing from the scope of the invention, the details of structure and embodiment can even significant changes.
Claims (15)
1. a kind of illuminator, including：
- the first terminal (106) and Second terminal (GND)；
- a string of light sources (L), it is connected in series between the first terminal (106) and the Second terminal (GND)；And
- protection circuit (30), it is designed as being used to protect a string of light sources (L) from being applied to a string of light sources (L) extremely
The static discharge of a few electric contact (302),
Characterized in that, the protection circuit (30) includes：
- at least one the transient voltage for being connected to the Second terminal (GND) suppresses (TVS) diode or anti-paralleled diode
(D1、D2) group；And
- each capacitor (CESD1、CESD2、CESD3And CESD4), be connected at least one electric contact (302) with it is described at least one
Transient voltage suppresses (TVS) diode or anti-paralleled diode (D1、D2) between one in group so that it is applied to electric contact
(302) static discharge passes through each capacitor (CESD1、CESD2、CESD3And CESD4) and each transient voltage suppression (TVS) two pole
Pipe, or pass through each capacitor (CESD1、CESD2、CESD3And CESD4) and anti-paralleled diode (D1、D2) group is towards second end
Sub (GND) electric discharge.
2. system according to claim 1, wherein, the protection circuit (30) is included for all electric contacts (302)
Single transient voltage suppresses (TVS) diode or anti-paralleled diode (D1、D2) group.
3. the system according to claim 1 or claim 2, wherein, a string of light sources (L) are solid-state lighting devices.
4. system according to claim 3, wherein, a string of light sources (L) are LED.
5. system according to claim 1 or 2, wherein, the electric contact between a string of light sources (L) is not protected by machinery
Shield, and wherein associated with each light source (L) is each capacitor (CESD1、CESD2、CESD3And CESD4)。
6. system according to claim 4, wherein, the electric contact between a string of light sources (L) is not mechanically protected, and
And wherein associated with each light source (L) is each capacitor (CESD1、CESD2、CESD3And CESD4)。
7. system according to claim 1 or 2, wherein, the illuminator includes being connected in series to a string of light sources
(L) current regulator (40), and wherein another capacitor (CESD5) associated with the current regulator (40).
8. system according to claim 6, wherein, the illuminator includes being connected in series to a string of light sources (L)
Current regulator (40), and wherein another capacitor (CESD5) associated with the current regulator (40).
9. system according to claim 1 or 2, wherein, the illumination system layout is so that the first terminal (106)
It is negative terminal for plus end and the Second terminal (GND).
10. system according to claim 8, wherein, the illumination system layout is to cause the first terminal (106)
Plus end and the Second terminal (GND) are negative terminal.
11. system according to claim 1 or 2, wherein, the illuminator is integrated in lighting module (20).
12. system according to claim 10, wherein, the illuminator is integrated in lighting module (20).
13. system according to claim 1 or 2, including electronic commutator (10), the electronic commutator are designed as being used for
Powered by the first terminal (106) and the Second terminal (GND) to a string of light sources (L).
14. system according to claim 12, including electronic commutator (10), the electronic commutator is designed as being used to lead to
The first terminal (106) and the Second terminal (GND) is crossed to power to a string of light sources (L).
15. at least one electricity of the light source (L) that one kind is used to protect a string of light sources (L) from being applied to a string of light sources (L)
The method of the static discharge of contact (302), wherein, a string of light sources (L) are connected in series in the first terminal (106) and the second end
Between sub (GND),
Characterized in that, it the described method comprises the following steps：
- at least one transient voltage suppressed into (TVS) diode or anti-paralleled diode (D1、D2) group is connected to second end
Sub (GND)；And
- each at least one electric contact (302) and at least one transient voltage suppress (TVS) diode or it is anti-simultaneously
Di- pole pipe (D1、D2) capacitor (C is connected between one in groupESD1、CESD2、CESD3And CESD4) so that it is applied to electric contact
(302) static discharge passes through each capacitor (CESD1、CESD2、CESD3And CESD4) and each transient voltage suppression (TVS) diode
Or anti-paralleled diode (D1、D2) group towards the Second terminal (GND) discharge.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO2014A000127 | 2014-02-14 | ||
| ITTO20140127 | 2014-02-14 | ||
| PCT/IB2014/066352 WO2015121716A1 (en) | 2014-02-14 | 2014-11-26 | Lighting system comprising a protection circuit, and corresponding method for protecting light sources from electrostatic discharges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105993204A CN105993204A (en) | 2016-10-05 |
| CN105993204B true CN105993204B (en) | 2017-12-08 |
Family
ID=50625019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480075377.1A Expired - Fee Related CN105993204B (en) | 2014-02-14 | 2014-11-26 | The correlation method of illuminator and protection light source including protection circuit from static discharge |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10455662B2 (en) |
| EP (1) | EP3105993B1 (en) |
| CN (1) | CN105993204B (en) |
| WO (1) | WO2015121716A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972014B (en) * | 2016-11-21 | 2019-07-19 | 富芯微电子有限公司 | A kind of anti-reverse power connection prevents two-way surge device and its manufacturing method |
| TWI743384B (en) * | 2018-07-31 | 2021-10-21 | 立積電子股份有限公司 | Anti-parallel diode device |
| WO2021042035A1 (en) * | 2019-08-29 | 2021-03-04 | General Led Opco, Llc | Flexible voltage led modules |
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| TW486804B (en) * | 2001-04-24 | 2002-05-11 | United Microelectronics Corp | Double-triggered electrostatic discharge protection circuit |
| CN1589087A (en) * | 2004-07-02 | 2005-03-02 | 北京工业大学 | Anti-static protective circuit for luminous tube |
| TW200524131A (en) * | 2004-01-13 | 2005-07-16 | Concord Semiconductor Corp | Structure of electrostatic discharge suppressor and method of stacking package with semiconductor devices |
| TW200525725A (en) * | 2004-01-20 | 2005-08-01 | Opto Tech Corp | Light-emitting device capable of preventing electrostatic damage |
| CN1705121A (en) * | 2004-06-01 | 2005-12-07 | 台湾积体电路制造股份有限公司 | ESD protection circuit and its control method |
| CN1941370A (en) * | 2005-09-29 | 2007-04-04 | 统宝光电股份有限公司 | Systems for providing electrostatic discharge protection |
| CN202587471U (en) * | 2012-02-22 | 2012-12-05 | 安徽科发信息科技有限公司 | LED anti-static protection circuit |
| WO2012168834A1 (en) * | 2011-06-08 | 2012-12-13 | Koninklijke Philips Electronics N.V. | Diode lighting arrangement |
| CN102903727A (en) * | 2011-07-26 | 2013-01-30 | 隆达电子股份有限公司 | Electronic device with electrostatic discharge protection |
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|---|---|---|---|---|
| US5982050A (en) * | 1996-03-14 | 1999-11-09 | Fuji Jukogyo Kabushiki Kaisha | Power supply unit for automotive vehicle |
| JP5229034B2 (en) * | 2008-03-28 | 2013-07-03 | サンケン電気株式会社 | Light emitting device |
| US9491821B2 (en) * | 2014-02-17 | 2016-11-08 | Peter W. Shackle | AC-powered LED light engine |
-
2014
- 2014-11-26 EP EP14812655.0A patent/EP3105993B1/en active Active
- 2014-11-26 US US15/116,228 patent/US10455662B2/en active Active
- 2014-11-26 WO PCT/IB2014/066352 patent/WO2015121716A1/en active Application Filing
- 2014-11-26 CN CN201480075377.1A patent/CN105993204B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW486804B (en) * | 2001-04-24 | 2002-05-11 | United Microelectronics Corp | Double-triggered electrostatic discharge protection circuit |
| TW200524131A (en) * | 2004-01-13 | 2005-07-16 | Concord Semiconductor Corp | Structure of electrostatic discharge suppressor and method of stacking package with semiconductor devices |
| TW200525725A (en) * | 2004-01-20 | 2005-08-01 | Opto Tech Corp | Light-emitting device capable of preventing electrostatic damage |
| CN1705121A (en) * | 2004-06-01 | 2005-12-07 | 台湾积体电路制造股份有限公司 | ESD protection circuit and its control method |
| CN1589087A (en) * | 2004-07-02 | 2005-03-02 | 北京工业大学 | Anti-static protective circuit for luminous tube |
| CN1941370A (en) * | 2005-09-29 | 2007-04-04 | 统宝光电股份有限公司 | Systems for providing electrostatic discharge protection |
| WO2012168834A1 (en) * | 2011-06-08 | 2012-12-13 | Koninklijke Philips Electronics N.V. | Diode lighting arrangement |
| CN102903727A (en) * | 2011-07-26 | 2013-01-30 | 隆达电子股份有限公司 | Electronic device with electrostatic discharge protection |
| CN202587471U (en) * | 2012-02-22 | 2012-12-05 | 安徽科发信息科技有限公司 | LED anti-static protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015121716A1 (en) | 2015-08-20 |
| EP3105993B1 (en) | 2017-11-01 |
| US20170013693A1 (en) | 2017-01-12 |
| US10455662B2 (en) | 2019-10-22 |
| EP3105993A1 (en) | 2016-12-21 |
| CN105993204A (en) | 2016-10-05 |
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